Integrated electronic power control unit of vehicle

Abstract

An integrated electronic power control unit of an environmentally friendly vehicle includes an inverter and an LDC (low voltage DC-DC converter), which share a DC input terminal. In the integrated electronic power control unit, the inverter is an electronic power control unit that drives a motor by converting DC voltage into AC voltage, and the low voltage DC-DC converter serves as another electronic power control unit that charges a low-voltage battery by converting DC high voltage into low voltage DC voltage, where the inverter includes a capacitor module composed of a capacitor leveling input voltage and a capacitor removing noise of the input voltage, and the inverter and the low voltage DC-DC converter are integrated such that the output of the capacitor module of the inverter becomes the output of the low voltage DC-DC converter.

What is claimed is: 
     
       1. An integrated electronic power control unit of a vehicle, comprising:
 an inverter that is an electronic power control unit that drives a motor by converting DC voltage into AC voltage, and a low voltage DC-DC converter that is another electronic power control unit that charges a low-voltage battery by converting DC high voltage into low voltage DC voltage, 
 wherein the inverter includes a capacitor module composed of a capacitor leveling input voltage and a capacitor removing noise of the input voltage, 
 the inverter and the low voltage DC-DC converter share cooling channels, 
 the capacitor module is disposed between the cooling channels, 
 the inverter and the low voltage DC-DC converter are integrated such that the output of the capacitor module of the inverter becomes the input of the low voltage DC-DC converter, and 
 an input terminal of the low voltage DC-DC converter is directly connected to an output terminal of the capacitor module of the inverter. 
 
     
     
       2. The integrated electronic power control unit of  claim 1 , wherein the integrated power control unit is configured to be installed in the vehicle, which is selected from the group consisting of: a fuel cell vehicle, an electric vehicle, a plug-in electric vehicle, and a hybrid vehicle. 
     
     
       3. A vehicle operable in at least an HEV (Hybrid Electric Vehicle) mode and an EV (Electric Vehicle) mode, comprising:
 an integrated power control unit, comprising: 
 an inverter that is an electronic power control unit that drives a motor by converting DC voltage into AC voltage, and a low voltage DC-DC converter that is another electronic power control unit that charges a low-voltage battery by converting DC high voltage into low voltage DC voltage, 
 wherein the inverter includes a capacitor module composed of a capacitor leveling input voltage and a capacitor removing noise of the input voltage, 
 the inverter and the low voltage DC-DC converter share cooling channels, 
 the capacitor module is disposed between the cooling channels, 
 the inverter and the low voltage DC-DC converter are integrated such that the output of the capacitor module of the inverter becomes the input of the low voltage DC-DC converter, and 
 an input terminal of the low voltage DC-DC converter is directly connected to an output terminal of the capacitor module of the inverter.